Chandipura Virus: Key Facts for UPSC Prelims – Prelims Specific

Introduction

The Chandipura virus (CHPV) is an emerging viral pathogen that causes acute encephalitis, characterized by rapid brain inflammation. It has gained attention due to its high mortality rate and its specific impact on the pediatric population in parts of India.

Why in News?

• Reports of child fatalities in Rajasthan have triggered state-level surveillance and vector control operations.
• The incident has necessitated intensified monitoring by health authorities to prevent the spread of the virus.

Static Link

• The virus belongs to the Rhabdoviridae family and is classified as an RNA virus.
• It is a neurotropic pathogen, meaning it specifically attacks the nervous system.
• UPSC often asks about the nature of pathogens (viral, bacterial, fungal) and their transmission mechanisms (vector-borne, zoonotic).

Institutional Link

• National Centre for Disease Control (NCDC): The nodal agency under the Ministry of Health and Family Welfare for disease surveillance and outbreak investigation.
• Indian Council of Medical Research (ICMR): Apex body for biomedical research, responsible for technical guidance and diagnostic support.
• National Vector Borne Disease Control Programme (NVBDCP): Implements strategies for the prevention and control of vector-borne diseases.

Core Prelims Facts

• Pathogen Type: RNA virus (Family: Rhabdoviridae).
• Primary Vector: Phlebotomine sandflies.
• Transmission: Strictly vector-borne; no evidence of human-to-human transmission.
• Demographic Risk: Primarily children under 15 years.
• Clinical Symptoms: High fever, vomiting, seizures, altered sensorium, and rapid progression to coma.
• Treatment: No specific antiviral treatment or vaccine exists; management is strictly supportive.

Important Terms and Concepts

• Acute Encephalitis Syndrome (AES): A clinical condition characterized by the sudden onset of fever and a change in mental status. CHPV is one of the viral causes of AES.
• Vector-Borne Disease: A disease transmitted by an intermediate host (the vector), in this case, the sandfly.
• One Health Approach: A collaborative, multisectoral approach that recognizes the connection between people, animals, plants, and their shared environment to manage zoonotic risks.

Bodies / Organisations / Institutions

• Viral Research and Diagnostic Laboratories (VRDLs): A network established under the Department of Health Research to provide rapid diagnostic support during outbreaks.

Places / Geography / Mapping Points

• The virus was first identified in 1965 in Chandipura village, Maharashtra.
• It is considered endemic to certain regions in India, frequently appearing in rural and semi-urban tropical environments.

Schemes / Laws / Reports / Conventions

• Integrated Disease Surveillance Programme (IDSP): A decentralized, state-based surveillance system to detect and respond to disease outbreaks in real-time.

Possible UPSC Prelims Traps

• Vector Confusion: UPSC may swap the vector of Chandipura virus (Sandfly) with other common vectors like Aedes (Dengue) or Culex (Japanese Encephalitis).
• Transmission Trap: Candidates may mistakenly assume it is contagious between humans. It is strictly vector-borne.
• Vaccine Status: Statements claiming the existence of an approved CHPV vaccine are incorrect.
• Symptom Overlap: It is often confused with other causes of encephalitis; remember that CHPV is specific to sandfly-endemic areas.

One-Minute Revision Notes

• CHPV is an RNA virus (Rhabdoviridae).
• Vector: Sandfly (Phlebotomine).
• Target: Children (under 15).
• Nature: Neurotropic; causes Acute Encephalitis.
• Treatment: Supportive care only; no vaccine.
• Surveillance: Managed under NCDC and IDSP.

Practice MCQ for Prelims

Which of the following statements regarding the Chandipura virus is correct?

A) It is a bacterial infection primarily transmitted through contaminated water.

B) It is a neurotropic RNA virus transmitted by the bite of sandflies.

C) It is a mosquito-borne disease that is highly contagious among humans.

D) A specific vaccine has been approved for the treatment of Chandipura encephalitis.

Answer: B

Explanation: The Chandipura virus is a neurotropic RNA virus from the Rhabdoviridae family. It is transmitted by Phlebotomine sandflies and is not known to be contagious between humans. There is currently no specific vaccine or antiviral treatment for the disease.